Home / 7,975.40-11,963.36-2,781.68

Finding the Fourth Proportional to 7,975.40, 11,963.36 and 2,781.68

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Solution

The fourth proportional to 7,975.40, 11,963.36 and 2,781.68 is: 4,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.40 : 11,963.36 = 2,781.68 : x
  2. Step 2: Convert to fraction form
    7,975.40/11,963.36 = 2,781.68/x
  3. Step 3: Cross multiply
    7,975.40x = 11,963.36 × 2,781.68
  4. Step 4: Simplify right side
    7,975.40x = 33,278,186.38
  5. Step 5: Solve for x
    x = 33,278,186.38/7,975.40
  6. Step 6: Final answer
    x = 4,172.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.